Railway construction



W. M. PURVIS. RAILWAY CONSTRUCTION.

APPLICATION FILED NOV; I6. 1920. P atented 18,

2 SHEETS-SHEET I.

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W. M. PURVIS. RAILWAY CONSTRUCTION.

APPLICATION men NOV: I6, I920.

Patented Jan. 18, 1921.

2 SHEETS-SHEET 2 lnventor- I WILLIAM at. straws, or OKLAHOMA, OKLAHOMA.

RAILWAY CONSTRUCTION.

Speciflcation of Letters Patent. Pat t d J 1 1921.

Application filed November 16, 1920. Serial No. 424,364.

To all who in may concern:

Be it known that I, WILLIAM M. PUnvrs, a citizen of the United States,'and a resident of Oklahoma city, in the county of Oklahoma and Stateof Oklahoma, haye'invented certain Im rovements in Railway Construction, of w ich the followin 1s a specification, reference being had tot e ac companying drawings. V

The invention pertains to rail-way construction in which the rails and ties are embeddedin a concrete road-bed.

It is found that in rail-way trackof this construction the ties andintermedia'te portions of each rail remain firmly embedded and in good alinement and condition, while the ends of the rails at joints soon become loose by grinding the concrete into powder under the pounding action of car trucks.

An ob'ect', thereforaofthe inventionis to provi e track construction in which the meeting ends of the rails will be maintained in better alinement and working condition. Other obf'ects and advantages of the in ventiori'wi 1 befset forth in the ensuing description.

Figure 1 of the drawings is a plan View of the improved track, with portions of the concrete dug *awayto expose ties and rail joints.

Fig. 2 is a re roduction, on a larger scale, of a portion 0 Fi 1.

Fig. 3 is a sectional view taken on the line 3-3 of Fig. 2.

Fig. 4 is a perspective view of a portion of the improved track, with the concrete dug away and with a section of rail broken awa Fig. 5 is a similar view of a rail late. Fig. 6 is a similar view of a fishar. Like characters of reference designate like parts in all the figures.

The track shown includes the metal ties 10, and track rails 11 which are rigidly secured to said ties; the ties and rails being firmly embedded on the concrete 12.

The construction thus described is wellknown in'the art.

In carrying out the object stated, the meeting ends of the rails 11 are not secured to or supported by the metal ties 10 nor supported by any other non-yieldable material which is embedded in or supported by the concrete 12.

The inventor places under each joint 13 0f the rails 11 a block 14 of cushion material to support the meetinglends of said rails, said blocks being embedded in the concrete 12and forming a 'yieldable connect on between said rails and that portion of the concrete which bears theweight of said rails and their added load. I

The block 14 may be of any material which has elasticity enough to -return "to normal, shape after yielding toshock or vibration of the ends of'the rails 11 for example, the block of hard wood shown in Figs. 3 and 1; the blocks being long enough to receive not only the immediate] ends of the railsbut also a portion adjacent said ends.

In rail-way track which theinvent'or has constructed he'has used wooden blocks l i six inches high, eight inches wide, and two feet long; the blocks lying parallel with the raillls and extending an'equal length under eac These blocks 14 were obtainedbysawing standard rail-ties into two-"foot lengths.

There is interposed between. each yield able block 14 and its supported rail 11 a plate 15 of iron or other metal strong enough to transferthe weight of said rails over said block:-

In arranging this plate 15, one of its edges, preferably its outer edge for reasons later shown, is brought integrally upward past the outer edge of the base 16 of the rail 11 as at 17 and inward oversaid base as at 18 to where it isformed into a fishbar 19 which is bolted flatly against the outer surface of the web 20 of the rail..

A fish-bar 21, which may be of the type heretofore used, is placed against the inner surface of the web 20 of the rails 11, and bolts 22 are passed through said fish-bar and rails and through the fish-bar portion 19 of the plate 15; these bolts being provided with the usual nuts 23 which are screwed up tightly to clamp the parts together.

With the plate 15 arranged in the manner described, it not only transfers the weight of the rails 11 over the blocks 14 as previously described, but also forms a strong rail joint.

In further arrangement, the inner edge of the plate 15 is flanged downward along the inner side surface of the block 14, as at 2 1.

With the plate 15 flanged down the inner practically the entire jupper surface of side of the block 14 in this way, and with the block firmly embedded against outward shifting movement in the concrete 12, the lateral pounding exerted on the rails is also cushioned, keeping the rails from spreading without allowing them to grind their way through the concrete.

,T he concrete 12 referred to commonly consists of one part Portland cement, two parts sand, and three parts crushed rock, water being added to form a plastic m'xture.

\ The mixture is placed under and around the ties 10 and rails 11 and allowed to harden in the usual way.

No concrete of this kind or any other kind solid and firm enough to support ties l0 and rails 11 has been found which will withstand the pounding action of a rail joint or of a metal tie or other non-yieldable support under said rail joint.

The intermediate portions of the rails 11, and the non-yieldable ties 10 under said portions, do, however, remain firmly embedded in the concrete 12 without being loosened by continued shock or vibration.

The following is claimed 2- 1. In rail-way construction, ties, rails car-- ried on said ties, the ties being embedded in concrete, the joints of the rails being supported ,by yieldable blocks which rest on the concrete.

2. In rail-way construction, ties, rails carried on the ties, the ties being embedded in concrete, the joints of the rails being supported by yieldable blocks which are embedded in the concrete.

3. In rail-way construction, ties, rails carried on the ties, the ties being embedded in concrete, the joints of the rails being supported by yieldable blocks embedded in the concrete, there being a plate oi non-yieldable material interposed between the rails and blocks.

4. In rail way construction, a track rail and suitable supports for intermediate portions of said rail, the end oi the rail being supported by a yieldable block, a depending member secured to the end of the rail and projecting downward along the side of the block.

5. In rail-way construction, trzn-h rails and suitable supports for intermediate pow tions of said rails, the meeting ends oi the rails being supported by a yieldable block, a depending member secured to the meeting ends of the rails and projecting down one side of the block.

(3. In rail-way construction, track rails and suitable supports for intermmlinie portions of said rails, the meet-ii g ends ot the ails being supported i a yieldable bio h, a bearing plate interposed between the block and rails, said plate being sewn-ed to the rails and having; a projection extending down one side of the block.

7. In rail-way eonst 'uetion, ties, rails carried by the ties, the ties and rails being enibedded in concrete, the meeting ends or the rails being supported by a yieldable block embedded in the concrete, there being a bear ing plate interposed between the block and rails, said plate being secured to said rails and having a projection extending down the side of the block.

Witness my hand this 27 day of October,

WILLIAM M. PURVIS. 

